September Weather in Blythewood, United States

Last updated: June 24, 2025

In September, the average temperature in Blythewood, United States hovers around 25°C (77°F), making it a pleasant time to visit. Expect temperatures to range from a minimum of 11°C (51°F) to a sweltering maximum of 36°C (98°F). With an average humidity of 75% and 101 mm (4.0 in) of precipitation spread over 8 days, it's wise to pack accordingly for a blend of sun and occasional showers!

September Temperature in Blythewood

In September, in Blythewood, the average temperature is 25°C (77°F). The maximum can reach 36°C (98°F), and the minimum can be as low as 11°C (51°F). This climate makes Blythewood a great destination for travelers seeking warm weather and outdoor activities.

September Weather in Blythewood: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Blythewood, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blythewood, September typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (98°F) and lows dropping to around 11°C (51°F).

Data source: Temperature data for Blythewood generated using information from the Copernicus Climate Change Service.

September Precipitation in Blythewood

In Blythewood in September, the precipitation amount is 101 mm (4.0 in) spread over 8 days.

September Precipitation Trends in Blythewood

The chart displays monthly precipitation patterns in Blythewood, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Blythewood, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Blythewood

In Blythewood in September humidity is 75%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket, enveloping you and making travel somewhat taxing, as every step can feel heavier and the air thicker, often leading to a desire for shade and cool breezes.

September Average Humidity in Blythewood

This chart illustrates the average monthly humidity levels in Blythewood, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Blythewood is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Blythewood

In Blythewood in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Blythewood.

Maximum UV Index Levels in Blythewood for September

The chart shows the monthly maximum UV Index (UVI) for Blythewood in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Blythewood typically reaches 9, which falls under the very high exposure category.

Data source: Blythewood September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Blythewood Compares to Other Months

Weather in Blythewood varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Blythewood, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Blythewood, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	89 mm (3.5 inches)	86%	moderate
February Weather	11°C (53°F)	113 mm (4.4 inches)	85%	high
March Weather	14°C (57°F)	80 mm (3.1 inches)	84%	very high
April Weather	18°C (64°F)	106 mm (4.2 inches)	82%	very high
May Weather	23°C (73°F)	106 mm (4.2 inches)	83%	very high
June Weather	26°C (78°F)	102 mm (4.0 inches)	82%	extreme
July Weather	27°C (81°F)	125 mm (4.9 inches)	80%	extreme
August Weather	27°C (80°F)	132 mm (5.2 inches)	74%	very high
September Weather	25°C (77°F)	101 mm (4.0 inches)	75%	very high
October Weather	20°C (68°F)	74 mm (2.9 inches)	79%	very high
November Weather	12°C (54°F)	75 mm (3.0 inches)	87%	high
December Weather	10°C (50°F)	132 mm (5.2 inches)	87%	moderate